DTC P0123: Throttle Position Sensor Circuit - High Input: Condition
WARNING: This page is about a different car, the 2002 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when Engine Control Module (ECM) detects high Throttle Position (TP) sensor signal voltage. MIL is illuminated when ECM detects malfunction during first drive cycle. Possible causes are:
- Open or short to power in circuit between TP sensor and ECM.
- TP sensor malfunction.
- ECM malfunction.